. Comparative anatomy. Anatomy, Comparative. THE SKELETAL SYSTEM 223 phylogenesis, cartilage is gradually destroyed and later replaced by bone. Since reptiles have only a single occipital condyle to articulate the skull with the atlas vertebra, while mammals have two, the descent of mammals from reptiles has on this account been questioned. Also for this reason, the attempt has been made to prove that mammals have evolved directly from amphibia, which also have two occipital condyles. But some reptiles have a tripartite condyle, and mammals may have iPARASPHENOID. PARASPHENO 'PREMAXILLARY PALA
. Comparative anatomy. Anatomy, Comparative. THE SKELETAL SYSTEM 223 phylogenesis, cartilage is gradually destroyed and later replaced by bone. Since reptiles have only a single occipital condyle to articulate the skull with the atlas vertebra, while mammals have two, the descent of mammals from reptiles has on this account been questioned. Also for this reason, the attempt has been made to prove that mammals have evolved directly from amphibia, which also have two occipital condyles. But some reptiles have a tripartite condyle, and mammals may have iPARASPHENOID. PARASPHENO 'PREMAXILLARY PALATINE MAXILLA-- ISPHENOID OCCIPITAL â STAPES pfemaxillary/ ' Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
Size: 2206px × 1133px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookpublisherphi, booksubjectanatomycomparative
